Remove kube::Service

[kazk]

kube::Service struct wasn't necessary to keep Client type parameter free. Not sure why I didn't see this :/

Just let kube::Client hold buffered BoxService like kube::Service did, allow converting kube::Config into kube::Client directly, and make kube::Client::new generic.

Allows creating kube::Client from Service<http::Request<hyper::Body>> with some constraints. All layers are private as before for now. But we can start thinking of how to expose them for users to customize.

let service = ServiceBuilder::new()
    .layer(auth_layer)
    .layer(tracing_layer)
    .service(http_client);
let client = Client::new(service);
let pods: Api<Pod> = Api::namespaced(client, "default");

[clux]

released this in 0.55.0